Harbal wrote: ↑Mon Oct 30, 2023 8:01 am
I know there is no such thing as absolute moral truth,
Let's start there.
You say you "know" it. That's your word. So it's only fair I ask you
how you know it? What premises, observations or facts
lead you to that "knowledge"?
I could be wrong.
Is "know" the right word, then? If you mean less than "I know," then what would be a more precise way of stating your starting position?
On the other hand, the existence of subjective morality cannot credibly be denied.
I've shown that the idea isn't even coherent, isn't consistent or practical, and fails to render us any knowledge at all of what "morality" could possibly be. I would say not only can it be "credibly denied," but that anybody who wishes to make a "credible" claim HAS to reject it. And I've already showed various reasons why that's so. Can I provide more? Perhaps. But is that not enough?
Why not?
Generally speaking, people have personal (subjective) opinions on, and attitudes towards, moral issues.
Problem: we don't even know that there ARE any such things as "moral" issues, if subjectivism is true. We know that people may use the word, but we have no coherent explanation of why they do or whether they're using it in any telling way at all.
After all, if subjectivism is true, then "moral" = "whatever I want to do." And if "moral" means "whatever I want to do," then adding the word "moral" to the explanation adds no special information at all.

We may as well never refer to the word, because it refers to everything.
Another more concise way to say this is, "If
everything's moral, then
nothing is." "Moral" has ceased to be a word that has any information for us in it at all.
Just pick a moral issue, say abortion, and randomly ask a bunch of people if they have an opinion on it.
Is this, then, what makes you think you "know" that there is no absolute/objective morality? But it's an non-sequitur, as I have already pointed out. But let me make it clear why, yet again.
Your argument then requires us to believe the following:
"A bunch of people have opinions," therefore
"I know there is no such thing as absolute moral truth."
The basic rules of logic show us that something is missing: a second premise that ties the observation to the conclusion in a rational way. But it's not clear what would do that, so let me try my best to represent to you what you'd need.
Premise 1: "A bunch of people have opinions,"
Premise 2: "When a bunch of people have opinions, all must be equally right and wrong."
Conclusion: Therefore "I know there is no such thing as absolute moral truth."
It is not undeniable, as you say, that "a bunch of people have opinions." But they may well all have contradicting and different opinions....and often, they have mutually-exclusive opinions as well. So if the mere fact that people "have opinions" meant they were all "moral" merely because they were "about moral matters," then it's not clear, again, that the word "moral" refers to anything at all.
They have opinions. That's an observation from which, then, no conclusion about the
morality of those opinions follows.
"Moral opinion" does not mean morally good opinion, it just means an opinion about a moral issue.
But again, there's no sense in your claim that it's a "moral" issue at all, since you've effectively voided "moral" of any specific meaning at all.
You've rendered all opinions equal, and none at all specifically "moral." Is that reasonable, if your goal is to say what morality is? Is it even sensible, in that a hearer could understand something coherent from it?
That's perhaps as clear as I can make just one of the fundamental problems with "subjective morality" (as you've described it) clear.